Michelin Pilot Road 3 - K1600 Experience? - Page 2 - BMW K1600 Forum : BMW K1600 GT and GTL Forums
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post #11 of 644 Old 08-31-2011, 01:20 PM
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Careful!

Be careful with the rear... I was doing the same ('nursing it along to 6000 mile service), and it went from 3mm tread on 8/10 at around 5000 miles to bare steel on 8/30 and 5987 miles! Apparently, when to get low, they go fast!!)

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Originally Posted by GT1 View Post
I'm also at about 4,200 miles and have the same scalloping issue with my front tire. I'm happy to say that the rear will make it close to 6,000 miles. So I will "nurse" the front. (...)

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post #12 of 644 Old 08-31-2011, 03:37 PM Thread Starter
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Originally Posted by cbdane View Post
I'm only at 4100 on my Z8s but the front is badly scalloped.
I started a tire cupping thread over at AdvRider, but found something pertinent to this discussion: Motorcycle Tire Wear

They say that it is the design of the tire tread, and/or the tread design that causes a tire to cup when ridden in a spirited manner. So, freeway guys will never suffer cupping, twisty road enthusiasts will quickly get cupping.

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post #13 of 644 Old 08-31-2011, 05:42 PM
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Originally Posted by BMWBikr View Post
Those of you that are experiencing the scalloping, what pressure are you running? 38 psi, 40? I used to get scalloping on my R1100RS (Z4 and Z6) and learned on my second set of tires with my 2004 K1200GT to run at max (42 psi) and it didn't do that.

Just wondering.
About 40 psi, so I will notch it up to 42.

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post #14 of 644 Old 08-31-2011, 08:10 PM
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Most common cause is under inflation, but here is good info from Dunlop.

You may not be able to entirely avoid cupping. Tire cupping or irregular wear is a somewhat common occurrence on all vehicles. On a four-wheel vehicle, you are advised to rotate your tires periodically to even out wear. Unfortunately, you do not have this luxury with a motorcycle because front and rear tires, unlike those on a four-wheel vehicle, are not interchangeable.

However, there are steps that can be taken to minimize cupping and uneven wear on a motorcycle:
  1. Maintain your motorcycle and particularly your front forks and suspension.
  2. Avoid hard braking whenever possible. Braking causes the tire to grab and wear in one direction. When braking is applied to the front tire, the load transfer over-flexes the tire and increases the tendency for cupping and uneven wear.
  3. Maintain your tire pressures. Underinflation or overinflation in motorcycle tires are significant causes of cupping and uneven wear, particularly in association with hard braking and/or trailer use.
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post #15 of 644 Old 09-01-2011, 10:54 AM
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Wow, reading this post I am a bit shocked that the tire life is so short. Currently have a FLHTCU and routinely get 25K on rear and 30K on front. Waiting on a K1600 (First BMW) and that surprised me. I am not a hard rider but a long distance hwy runner and tech junkie
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post #16 of 644 Old 09-01-2011, 11:11 AM
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Quote:
Originally Posted by nmollard View Post
Wow, reading this post I am a bit shocked that the tire life is so short. Currently have a FLHTCU and routinely get 25K on rear and 30K on front. Waiting on a K1600 (First BMW) and that surprised me. I am not a hard rider but a long distance hwy runner and tech junkie
This is the trade off for performance. Sport touring tires are by design softer compounds to be able to hold traction while flying through tight turns.

Racing tires are insanely soft, and by comparison, last only a couple of thousand miles, if that.

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post #17 of 644 Old 09-01-2011, 11:46 AM
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Thanks BMWBikr. That make a whole lot of sense after thinking about it. So the Z rating of these tires (150+ rating) are by need soft. As I am coming from a armchair bike, My sport riding is non-existent. Is there any problems with down rating the tires to fit riding style (S, H, V)?
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post #18 of 644 Old 09-01-2011, 11:56 AM
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Quote:
Originally Posted by nmollard View Post
Wow, reading this post I am a bit shocked that the tire life is so short. Currently have a FLHTCU and routinely get 25K on rear and 30K on front. Waiting on a K1600 (First BMW) and that surprised me. I am not a hard rider but a long distance hwy runner and tech junkie
Folks getting shorter tire life are typically taking full advantage of the K1600's impressive hp and torque in their riding. It's all in how you use the throttle and riding style. Others are seeing longer tire life.

BTW, I never went beyond 12K miles on the rear tires on my Ultras, mainly because of my desire for a margin of safety.

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post #19 of 644 Old 09-01-2011, 02:29 PM
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Quote:
Originally Posted by nmollard View Post
Thanks BMWBikr. That make a whole lot of sense after thinking about it. So the Z rating of these tires (150+ rating) are by need soft. As I am coming from a armchair bike, My sport riding is non-existent. Is there any problems with down rating the tires to fit riding style (S, H, V)?
I'm not aware of any downgrade tires. There are currently only 3 that are approved. The Metzeler Z8, Bridgestone (?) that is one of the OEM tires, and now the Michelin PS3. I would not put a downgraded version on my bike, but I often ride faster than I probably should.

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post #20 of 644 Old 09-01-2011, 06:51 PM
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Quote:
Originally Posted by azari View Post
Be careful with the rear... I was doing the same ('nursing it along to 6000 mile service), and it went from 3mm tread on 8/10 at around 5000 miles to bare steel on 8/30 and 5987 miles! Apparently, when to get low, they go fast!!)
I did that once on Z6s. I thought I had enough for one more 350 mile day trip. Then with about 150 miles until home again, I noticed bare metal showing. I drove home very carefully and will never do that again.
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